A team from Osaka, Okayama and Tokyo has found why IgG antibodies outlast IgM. After mRNA vaccination, spike-specific cells were 0.14% of the long-lived bone marrow compartment, against 7.3% for influenza.
Japan recorded 86,473 IVF births in 2024, about 1 in 8 of its 686,173 births. Treatments fell to 550,265 while the multiple-birth rate rose to 4.15 percent, and the 2022 insurance reform helps explain both.
A University of Tokyo and Arc Institute team has shown how the IS621 jumping gene cuts itself out of an E. coli genome, resolving a chicken-and-egg puzzle that had stood since 2024.
Japan has begun selling Telomelysin, a rewired cold virus that multiplies only inside cancer cells and goes into esophageal tumors by endoscope. Three doses list at 9.3 million yen; the trial behind it had 37 patients.
Cold sleep was a movie prop. Then ESA calculated that a hibernating crew would cut a Mars spacecraft's mass by a third, and a Japanese lab found the brain switch. With humans, it is still a matter of hours.
Seven Japanese research groups repeated two landmark University of Tokyo senolytics experiments under blinded conditions and found no effect. The original team's rebuttal ran the same day, in the same journal.
Mice spent two days in artificial hibernation and lost more than half the synapses in the hippocampus, yet still knew where the food was. What survived was not the big connections but the tightly clustered ones.
Kagawa University Hospital treated a three-year-old girl's recurrent C. diff colitis with her father's gut bacteria. A year on, no relapse. US-approved products exclude children, and the EU sets shared rules in 2027.
In 200 colorectal cancer patients from Tokyo and Osaka, 44.8 percent of tumours carried a gut bacterium's mutational signature, rising to about 70 percent under 40. The damage may predate the age of ten.
A German team had 50 students play Super Monkey Ball on a Wii and then work an arthroscopy box trainer. The game scores tracked surgical scores. Splatoon 2 did not, and gamer status predicted nothing.
PET scans of 37 patients whose hallucinations began after age 40 found tau, the protein behind Alzheimer's, in 64.9% of them against 14.9% of controls. They split into three near-equal groups.